CN103459040B - The method of eddy current separation equipment, separation module, separation method and adjustment eddy current separation equipment - Google Patents
The method of eddy current separation equipment, separation module, separation method and adjustment eddy current separation equipment Download PDFInfo
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- CN103459040B CN103459040B CN201280015912.5A CN201280015912A CN103459040B CN 103459040 B CN103459040 B CN 103459040B CN 201280015912 A CN201280015912 A CN 201280015912A CN 103459040 B CN103459040 B CN 103459040B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C1/00—Magnetic separation
- B03C1/02—Magnetic separation acting directly on the substance being separated
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C1/00—Magnetic separation
- B03C1/02—Magnetic separation acting directly on the substance being separated
- B03C1/30—Combinations with other devices, not otherwise provided for
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C1/00—Magnetic separation
- B03C1/02—Magnetic separation acting directly on the substance being separated
- B03C1/23—Magnetic separation acting directly on the substance being separated with material carried by oscillating fields; with material carried by travelling fields, e.g. generated by stationary magnetic coils; Eddy-current separators, e.g. sliding ramp
- B03C1/24—Magnetic separation acting directly on the substance being separated with material carried by oscillating fields; with material carried by travelling fields, e.g. generated by stationary magnetic coils; Eddy-current separators, e.g. sliding ramp with material carried by travelling fields
- B03C1/247—Magnetic separation acting directly on the substance being separated with material carried by oscillating fields; with material carried by travelling fields, e.g. generated by stationary magnetic coils; Eddy-current separators, e.g. sliding ramp with material carried by travelling fields obtained by a rotating magnetic drum
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C2201/00—Details of magnetic or electrostatic separation
- B03C2201/20—Magnetic separation whereby the particles to be separated are in solid form
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C2201/00—Details of magnetic or electrostatic separation
- B03C2201/24—Details of magnetic or electrostatic separation for measuring or calculating parameters, efficiency, etc.
Abstract
A kind of eddy current separation equipment (1) be used for from grain flow (w) separating particles (20), wherein this equipment (1) comprising: knock-out drum (4), and it is suitable for formation first particulate fraction (21) and the second particulate fraction (23), be positioned at the feedway (2) of knock-out drum (4) upstream, for particle (20) is supplied to described knock-out drum (4), and be arranged at the separating element (14) in knock-out drum (4) downstream, for separating corresponding part (21, 23), wherein this equipment (1) also comprises sensor device (11, 111, 211), its arrange be used for from one of particulate fraction (21) at least partly detection particle (20), at least its quantity and/or material behavior, wherein this separation equipment (1) be configured in use based on the quantity of detected particle and/or material behavior based on from sensor device (11, 111, 211) position of Signal Regulation separating element (14) relative to knock-out drum (4) and/or the transmission speed of orientation and/or feedway (2).
Description
Technical field
The present invention relates to eddy current isolation technics.More specifically, the present invention relates to for the eddy current separation equipment from grain flow separating particles, wherein separation equipment comprises: knock-out drum, and it is suitable at least being formed from rousing along the first particulate fraction of the first track movement and from drum along the second particulate fraction of the second track movement from grain flow; Be positioned at the feedway of knock-out drum upstream, for particle is supplied to described knock-out drum; And be arranged at the separating element in knock-out drum downstream, for the first particulate fraction and the second particulate fraction being separated.
Background technology
Well known, eddy current isolation technics is used for from grain flow classification and separating metal particle.By using eddy current separation equipment, can from family expenses, industry and incinerating waste (comprising inert plastic and other materials) Footwall drift such as aluminium.Eddy current isolation technics provides the relative cost effective method from rubbish and waste recovery major part valuable material.
This known eddy current separation equipment generally includes the conveying mechanism of waste particles stream towards the going barrel transmission be made up of magnetic patch.Drum is suitable for the spin of high rotary speed, and namely speed is higher than the transmission speed of conveying mechanism, to make to produce eddy current in metallic particles.Eddy current and different metal interact based on its mass density and resistivity, to make to produce repulsion on particle.Such as, if metal is lightweight conductive, aluminium, particle is promoted and is discharged from normal granules stream along the first track.These particles of discharging so can be separated with non-metallic particle, and non-metallic particle continues advance along connecting gear and fall them with on the drum that separates of metallic particles of discharge.These two particulate fractions be separated along corresponding track movement lead towards the corresponding receiver collecting corresponding particulate fraction by the separating element being arranged at bulging downstream.
When using whirlpool separator from waste stream separating metal particle, separating element is located and/or orientation relative to drum by the operator of separator.The composition of waste stream makes particle advance along certain granules track.Thus, after observing described particle trajectories visually and based on the intuition of operator, operator can determine the optimum position of separating element and/or directed and correspondingly regulate this element.When particle to be separated has relatively little diameter, be more difficult to be separated variable grain and the corresponding track of variable grain part closely interval or even partly overlapping.Thus, the applicable position of view-based access control model observation and intuition determination separating element will be difficult.
Therefore, target of the present invention is to provide a kind of eddy current separation equipment of improvement.More specifically, target of the present invention is to provide a kind of eddy current separation equipment, though its make particle to be separated have very small diameter also can in an efficient way from waste stream separating particles.
Summary of the invention
According to an aspect of the present invention, provide the above-mentioned type for the eddy current separation equipment from grain flow separating particles.This separation equipment also comprises sensor device, its arrange be used for from one of particulate fraction at least partly detection particle, to less granular quantity and/or material behavior, wherein this separation equipment be configured in use based on the quantity of detected particle and/or material behavior based on from the position of Signal Regulation separating element relative to knock-out drum of sensor device and/or the transmission speed of orientation and/or feedway, such as, based on the count number of the particle through sensor device.
By measuring the position and/or the orientation that automatically regulate separating element based on objective sensor, for concrete waste stream, can determine that separating element is relative to the optimum position of knock-out drum and/or orientation.Separating element is mounted to this equipment movably to make the distance between separating element and knock-out drum and/or separating element can based on the described Signal Regulation from sensor device relative to the orientation of knock-out drum.Sensor device is suitable for counting the quantity through the dissimilar particle of sensor device and the data based on collection determine concrete separating element position.The position of separating element can automatically adjust, and preferably carries out in real time.Such as, waste stream can stand the change of its moisture content.When the feed speed of waste stream keeps constant, when its moisture content changes, the second track that the first track that the first particulate fraction is followed is followed relative to the second particulate fraction changes.Such as, if waste stream becomes moister, the amounts of particles of the first particulate fraction detected near current separating element position changes.In the case, the position-adjustable of separating element keeps roughly constant to make the amounts of particles of the first particulate fraction.For the position of separating element and/or the adjustment in orientation alternatively or additionally, the transmission speed of adjustable feedway.When the discrepancy of quantity of particle count closes predetermined value, the transmission speed of feedway can increase or reduce.When pushing the speed, particle will to be advanced larger distance from knock-out drum, and when speed reduces, particle terminates with the distance shorter apart from knock-out drum.Due to this structure of eddy current separation equipment, the separation energy of corresponding particle is implemented in effective and objective mode, make effectively to be separated and comprise relatively short grained waste stream, such as average diameter is less than 15 millimeters or be even less than 10 millimeters, such as particle between 1-10 millimetres longer.Due to grain flow, such as waste stream, such as bottom ash waste stream, can roughly by substantially monochromatic, such as grey or the color gamut with roughly similar color are formed substantially, and being included in variable grain in described waste stream is only unrecognizable by means of its outward appearance.Therefore, can not by means of camera, such as grayscale camera, color camera, infrared camera and similar camera based obtain the accurate separation of each particulate fraction from bottom ash waste stream in vision-based detection.Sensor device according to the present invention is configured to detect different types of particle, and not tube exterior, the color of the variable grain of such as grain flow or color gamut, and the particle no matter covered by dust.
Thus, the purity of institute's separating particles part can increase thus, when separating metal particle, increases the value of the separating particles part reclaimed.
And, because the position of separating element to measure based on the objective sensor of the quantity by the particle of sensor device and the follow-up automatic adjustment of position due to separating element, the optimum position of real-time acquisition separating element, thus strengthens the continuous degree of accuracy of lock out operation.In addition, for providing the investment improving eddy current separation equipment relatively low for the modification quality of the particulate fraction that can be reclaimed by described improvement separation equipment.
Eddy current separation equipment is configured to the position substantially regulating separating element based on the signal from sensor device continuously, such as every several seconds, such as ten seconds.When from bottom ash waste stream separating particles part, within every ten seconds, regulate the position of separating element usually just enough.In this waste stream, the component of material can not be alternatively faster than every several seconds.Therefore, within every several seconds, regulate the position of separating element consistent with the described kind of grain flow to be separated.When needs are separated another kind of grain flow, the time between the continuous adjustment of separating element can be different, namely longer or shorter.
Sensor device comprises: first sensor part, and it is transmitter Sensor section, such as optical transmitter or acoustic transmitter, is suitable for sending energy with roughly pencil (beamshape); And second Sensor section, it is receiver Sensor section, such as optical receiver or sound receiver.And advantageously can use the sensor device of other kinds, such as, based on micro-radiation, electromagnetic radiation such as infra-red radiation and be configured to other the applicable sensor devices that can measure reflection/at particle by sending light beam shape energy and causing during energy beam or decay.Sensor device can be configured to count time per unit by the particle as the light beam of energy, and measures the size of corresponding particle and/or the angular speed of corresponding particle.
Each particulate fraction can comprise iron particulate fraction, one of nonferrous metal particulate fraction and non-metallic particle part.Eddy current separation equipment can be configured to be separated two or more particulate fraction from grain flow.Knock-out drum can comprise permanent magnet or electromagnet.The latter can be configured to connect during separation process and cut off, when one of separating particles part is ferrous metal particulate fraction.
In order to the quality of the part of separating particles of grain flow can be determined more accurately, described particulate fraction is metallic particles part, sensor device has the 3rd Sensor section, such as electric coil, and its structure detects the electromagnetic response of the conductive particle by described 3rd Sensor section.In further improvement of the present invention, the 3rd Sensor section can comprise at least two electric coils.At least one is for generation of magnetic field and at least one is for detecting the metallic particles by described 3rd Sensor section.This electric transmission coil produces electromagnetic field, but do not send net energy, thus also do not send energy beam, when particle lacks.
It is faulty generally that eddy current is separated.This means the first particulate fraction, such as metallic particles part, comprise the particle of the second particulate fraction of next-door neighbour first particle, such as non-metallic particle, such as plastic grain always.By determining the amounts of particles of separate metal part in one period and being contained in the quantity of the actual metal particle in described part, the distance between knock-out drum and separating element can be determined more accurately.Such as, when increase, separating element can be expected to move towards knock-out drum for the quantity of non-metallic particle in the quantity of metallic particles.On the other hand, if the minimizing for the quantity of non-metallic particle of the quantity of metallic particles, separating element is removable away from knock-out drum.For mobile separating element additionally or alternatively, the transmission speed of feedway such as transmission mechanism, regulates by increasing or underspeeding.After all, when increasing the speed of transmission mechanism, will advance different track and can ending at of the particle of discharging by means of knock-out drum is compared the low transmission speed distance larger apart from knock-out drum.
Be noted that the setting of eddy current separative element is depended in the optimum position of separating element, the speed of such as transmission mechanism and the rotary speed of knock-out drum.
Sensor device comprises and is configured to allow by the sample of the first particulate fraction (namely, little percentage) detection segment, wherein sensor device is configured to the metal grades calculating the first particulate fraction based on the given average grain mass ratio between sensor counting and nonmetal and metallic particles.The sample size of this sensor device can be 20 parts per second to the maximum.Can to be counted by sensor from the metal grades (metallic particles concentration degree) of the representative particle quantity (sample size) of waste particles stream and given average grain mass ratio between nonmetal and metallic particles calculates.The metal grades of waste stream is labeled as G thus, and m is average grain quality and N
iRS, N
eMSit is sensor counting.N
iRSbe the sensor counting of the first and second Sensor sections, and represent the total particle quantity by described Sensor section.N
eMSbe the sensor counting of the 3rd Sensor section, and represent the metallic particles quantity by described Sensor section.Considering that each Sensor section misses the probability of some particles (mainly because particle is by dropping through sensor device), counting being introduced for respective sensor part and corrects factor.Metal grades now can with hybrid sensor measure associate as follows:
Z(0<Z<1) represent the ratio of sensor counting, C is the ratio that sensor counting corrects factor, and k is the ratio of average grain quality, according to
Z=N
EMS/N
IRS,k=m
non-metal/m
metal,C=C
IRS/C
EMS.(2)
Correction factor and k can determine in the calibration testing using the granulate mixture of known component (known grades) carry out.
There is the sensor device comprising the first and second Sensor sections and the 3rd Sensor section, nonferrous metal particle can be obtained and be separated very accurately from grain flow (such as bottom ash waste stream).Even average diameter is that the particle of 1-10mm also can be separated effectively.It is about 10mm and larger particle that typical eddy current separation equipment is configured to be separated average diameter exactly.Thus, have according to vortex separator of the present invention, even also can realize the separation improved for the waste stream of the particle with roughly similar color or tone.Owing to detecting the sample of particulate fraction, the dispersion of particulate fraction has no significant effect for the degree of accuracy of the separation by means of sensor device according to the present invention, with being separated to be formed and contrasting based on such as camera, in case of a camera, the dispersion of grain flow causes granule technology not accurate enough, because be not that each particle is detected by camera.Thus, the particle separation of carrying out by means of sensor device of the present invention is very effective.
It should be noted that US2004/0040894 discloses a kind of eddy current separation equipment comprising the drum with rotary magnet rotor, for the first particulate fraction and the second particulate fraction being separated from grain flow.The downstream of drum is provided with and is separated summit, and this separation summit is adjustable.Described equipment also comprises video camera, is suitable for the composition identifying separated part.Be provided with an adjusting device, described separation summit can be adjusted to the position of the concentrated classification composition corresponding to institute's separate section by it based on the component of the described part by video camera identification.Be noted that and also advantageously can be used for quality monitoring according to sensor device of the present invention.
Preferably, sensor device arrangement according to the present invention deviates from the side place of knock-out drum in separating element.Such as, first, second, and third Sensor section can be arranged in housing, and they can be bonded to the efficient sampling of separating element for the first grain flow.
In order to each separating particles part can be separated, in another improvement of the present invention, separation equipment can comprise the control unit being operatively connected to sensor device, particle feed apparatus and/or separating element, and wherein control unit is configured to control feedway speed (such as transmission speed), separating element relative at least one in the displacement of knock-out drum and/or orientation.
According to another aspect of the invention, advantageously, control unit comprises memory to store the predetermined relationship between quantity and separating element position and/or feedway speed at least having detected particle.Control unit so can make the quantity detecting particle during the operation of eddy current separation equipment change, separating element is easily reorientated.According to measurement data, the distance between knock-out drum and separating element and/or the optimal velocity of feedway can be known from storage relation.Thus, when known by the amounts of particles of sensor device, the reposition of separating element automatically produces.This system provides the real-time adjustment of separating element during the operation of separation equipment.
According to a further aspect in the invention, separation equipment can comprise framework, and framework receives separating element slidably, such as, by means of the guide be arranged on framework.This produces the simple structure of removable separating element and provides described element to/from the easy displacement of separating drum.In another improvement of the present invention, separation equipment can comprise the framework rotatably receiving separating element, such as, also comprise motor, is bonded to motor operated property separating element and rotates by the rotation of described motor to make described separating element.This produces the simple structure of rotatable separating element and provides described elements relative in the easy rotation of knock-out drum.
Be noted that the separating element in the application should broadly be explained.Such as, separating element can be the removable and/or separating component that is rotatably arranged on framework as mentioned above.Alternatively, separating element can comprise and is arranged at the container in particle trajectories downstream or the wall of receiver.Described container or receiver can be movable relative to knock-out drum the position that makes to regulate separating element is set.
In another improvement of the present invention, separation equipment can comprise the separating element more than.Each separating element can be set to have distance can be separated from grain flow to make the particulate fraction more than two each other.Each separating element can side by side or independently control.In the later case, can arrange the sensor device more than, each device is operatively bonded to control unit to control corresponding separating element based on the signal from respective sensor device.
Sensor device can have different structure and arrange by different way to determine the quantity by particle exactly relative to separating element.Such as, the transmitter part of sensor device can be arranged so that, the energy in use sent is advanced towards partition surface on the direction substantially vertical with described partition surface.Alternatively, the transmitter part of sensor device can be arranged so that, the energy in use sent and partition surface are substantially in parallel and advance with being thus roughly parallel to knock-out drum central axis.
And in arbitrary structure of transmitter part, the receiver part of sensor device can be arranged as apart from partition surface distance.Alternatively, the receiver part of sensor device can be arranged so that, the energy in use sent receives from the direction almost parallel with the plane extending through partition surface.
In order to comprise sensor device in order to avoid made dirty, sensor device can be surrounded by lid at least in part.According to another aspect of the invention, this can comprise at least one chip component, and wherein chip component is set to angled relative to the direction of displacement of metallic particles part.
The invention still further relates to a kind of separation module for using together with eddy current separation equipment (such as foregoing known eddy current separation equipment).According to the present invention, separation module at least comprises above-mentioned separating element, sensor device and control unit.The invention still further relates to a kind of method for being changed into by eddy current separation equipment according to eddy current separation equipment of the present invention.The method comprises to be provided eddy current separation equipment and provides above-mentioned separation module.After removing separating element from eddy current separation equipment, separation module can be mounted to eddy current separation equipment.Then, control unit may be operably coupled to the feedway of separation equipment to make, except the position based on the Signal Regulation separating element from sensor device, and the also transfer rate of adjustable feedway.By providing this separation module and this method that are suitable for eddy current separation equipment, known eddy current separation equipment can be easy to be adjusted to according to improvement separation equipment of the present invention, thus provides foregoing similar effect and advantage.
And the present invention relates to a kind of for the method from grain flow separating particles, use according to above-mentioned eddy current separation equipment of the present invention, wherein the method comprises:
-grain flow is supplied to knock-out drum;
-detect the quantity of at least part of particle of one of the particulate fraction from drum;
-count described amounts of particles;
-determine the quantity of at least part of metallic particles of described particulate fraction;
-be shifted separating element to regulate the distance of separating element relative to the excircle of drum and/or the transmission speed of orientation and/or the count number adjustment feedway based on particle based on grain count and metallic particles counting.
The method provides and the similar effect described in eddy current separation equipment according to the present invention and advantage.
Aforementioned and other features of the present invention and advantage are understood from below in conjunction with accompanying drawing more completely to obtaining the detailed description of certain embodiments of the invention, and these embodiments are intended to exemplary but not are to limit the present invention.
Accompanying drawing explanation
Fig. 1 illustrates the schematic side elevation of eddy current separation equipment according to a first embodiment of the present invention;
Fig. 2 illustrates the schematic elevational view of the equipment shown in Fig. 1;
Fig. 3 illustrates the schematic side elevation of eddy current separation equipment according to a second embodiment of the present invention;
Fig. 4 illustrates the schematic elevational view of the equipment shown in Fig. 3;
Fig. 5 illustrates the schematic elevational view of eddy current separation equipment according to a third embodiment of the present invention; And
Fig. 6 illustrates the schematic side elevation of the equipment shown in Fig. 5.
Be noted that the identical or respective element in different accompanying drawing indicates with identical or corresponding reference number.
Detailed description of the invention
In fig 1 and 2, the first example according to eddy current separation equipment 1 of the present invention is shown.Eddy current separation equipment 1 is suitable for from waste stream W, be separated nonferrous metal particle 20, such as aluminium, copper, zinc and brass particle.Therefore, eddy current separation equipment 1 comprises the conveying mechanism for the grain flow of waste material W being supplied to knock-out drum 4 on transmission direction Rt.Knock-out drum 4 comprises rotatable permanent magnet drum and is suitable for electric current, that is, eddy current in the volume of each particle 20,22 responding to flowing near drum 4.Magnetic field produces Lorentz (Lorenz) power to faradic impact, and the magnetic field of particle 20 from drum 4 is discharged by it, produces the first non-ferric particulate fraction 21 of advancing along the first track 6.The remainder of grain flow, the part of not discharging from the magnetic field of drum 4 by means of produced eddy current, that is, nonmetal or non-conductive particle part 23, thus advances along the second track 8 away from the first track 6.
Separation equipment 1 also comprises separating element 14, and its downstream being arranged at knock-out drum 4 to provide separation between the nonferrous metal particulate fraction 21 and the non-conductive section 23 of grain flow of grain flow.Particulate fraction 21,23 all can be collected independently, such as, be collected in the corresponding container (not shown) on the both sides being arranged at separating element 14.
Be noted that " downstream " and " upstream " defines relative to the transmission direction Rt of particle 20,22.
Separating element 14 can be arranged displaceably along the guide 15 be arranged in separation equipment 1.Guide can be installed on can be connected to the base portion (not shown) supporting conveying mechanism 2 and knock-out drum 4 framework (not shown) on or can be in the separate frame that is disposed adjacent with base portion.And other structures be applicable to also are possible.Separating element 14 also can be arranged so that its orientation relative to knock-out drum 4 can change.In other words, the angle α surrounded by separating element 14 and the plane almost parallel to the transmission direction Rt of conveying mechanism 2 can change the track 6,8 making the orientation adjustment of separating element 14 to corresponding particulate fraction 21,23.The change in the displacement of separating element 14 and/or the orientation of separating element 14 can be responded to by means of the signal from the sensor device 11 be arranged in separation equipment 1.
Sensor device 11 was suitable for detecting amounts of particles during certain time period, detected the quantity of the particle 20 of the non-ferric particulate fraction by described device 11 in the illustrated embodiment.Sensor device 11 also can be configured to the size determining particle 20 based on the deduction of the vibration from sensor signal, or whether particle 20 is nonferrous metal.Preferably, sensor device 11 is suitable for when particle 20 is through measuring reflection and decay during light beam 17.Sensor device 11 is arranged at the side place that separating element 14 deviates from knock-out drum 4.First example of separation device according to the present invention 1, sensor device comprise cooperation with determine by the photoemission pickoff part 12 of amounts of particles and optical receiving sensor part 13.Photoemission pickoff part 12 is arranged so that the light beam 17 launched by Sensor section 12 is advanced on the direction almost parallel with separating element 14.Optical receiving sensor part 13 is set to particle 20 that is substantially vertical relative to separating element 14 and that detect through light beam.
Separation equipment 1 comprises the control unit 16 being operationally bonded to sensor device 11, separating element 14 and conveying mechanism 2.Control unit 16 comprises memory, is stored in memory in regular hour span by the quantity of the particle 20 of sensor device 11 and separating element 14 relative to the predetermined relationship between the position of knock-out drum 4 and/or orientation.When detecting particle 20 of some, control unit 16 can control separating element 14 to regulate apart from the distance d of knock-out drum 4 and/or the orientation of the plane almost parallel relative to the transmission direction Rt with conveying mechanism 2.Based on measurement, separating element 14 can be located best for the kind of grain flow W to be separated, thus strengthens non-ferric particle 20 from the recovery of waste stream W and grade.Such as, when the quantification of particle is less than predetermined threshold, the distance between separating element 14 and knock-out drum 4 can reduce.Meanwhile, the inclination of separating element 14, thus angle α, can increase.When amounts of particles exceedes predetermined threshold, separating element 14 removable away from knock-out drum 4 and tilt can reduce.
Control unit 16 also can control transporting velocity with the grade of the particle trajectories 6,8 thus further increase nonferrous material that affect the separating particles part of waste stream W and recovery.Equipment 1 also can comprise belt weighing device (not shown) to determine the feed speed of vortex separator.Alternatively, ultrasonic sensor devices (not shown) can be set to the height determination feed speed by means of waste stream W.Control unit 16 also can be configured to the speed of the position and/or conveying mechanism 2 controlling separating element 14 based on the data of being collected by device to determine feed speed.
According to the another example (not shown) of eddy current separation equipment, knock-out drum can be electromagnetism knock-out drum.Utilize this drum can connecting and cut off (such as repeatedly per second) during separation process, whirlpool separator also can from grain flow separation of iron metallic particles after non-ferric particle and nonmetal (such as, non-conductive) particle.During separation process, ferrous metal particle will be bonded to the knock-out drum longer time compared with other species of particle from waste stream.Because knock-out drum is step, ferrous metal particle can in the end discharge from knock-out drum and end at the container roughly below knock-out drum.Non-metallic particle moves along the second track, and non-ferric particle moves along the first track, ends in distance knock-out drum container farthest.
In figures 3 and 4, the second example according to eddy current separation equipment 1 of the present invention is shown.In order to clear, only the element different from the first example will be described in detail.For the description of other similar portions, with reference to the description of Fig. 1 and 2.
According to eddy current separation equipment 1 and the different structures being sensor device 111 according to the difference between the eddy current separation equipment 1 of the example shown in Fig. 3 and 4 of the first example.The photoemission pickoff part 112 of this device 111 is arranged so that, in use, light beam 17 is advanced towards separating element 14 on the direction roughly contrary with transmission direction Rt.Optical receiving sensor part 113 is arranged so that, light beam 17 is advanced on the direction substantially vertical with separating element 14.According to the operation of the eddy current separation equipment 1 of the second example operation corresponding to the equipment 1 according to the first embodiment of the present invention.
In figs. 5 and 6, the another example according to separation equipment 1 of the present invention is shown.In order to clear, only the element different from the first and second examples will be described in detail.For the description of other similar portions, with reference to the description of Fig. 1 and 2.
Relative to the difference between the first and second examples, 3rd example of eddy current separation equipment 1 is that sensor device 211 comprises electric coil 218 or any other pickoff be applicable in addition, it is suitable for detecting the electromagnetic response by the particle 20 of described coil 218.Due to this coil 218, except the total quantity of the particle 20 through sensor device 211, sensor device 211 can count the quantity of metallic particles, in the case, is the quantity of nonferrous metal particle.Sensor device 211 according to a third embodiment of the present invention can comprise detection segment, and it is configured to allow the sample (that is, little percentage) by the first particulate fraction 6.Sensor device 211 is configured to the metal grades (that is, the concentration degree of metallic particles) calculating the first particulate fraction based on the given average grain mass ratio between the sensor counting on the sensor counting of the first and second Sensor sections 212,213 and the 3rd Sensor section 218 and nonmetal and metallic particles.The formula (1) described during the calculating of metal grades can use the present invention to summarize and (2) obtain.
Ratio in metallic particles part 21 between the quantity of metallic particles and the total quantity of particle 20 during lock out operation lower than predetermined threshold or reduction, separating element 14 may orientate too close knock-out drum 4 as.Then control unit 16 can control separating element 14 to be displaced to the position further from knock-out drum 4.When described ratio during lock out operation higher than certain predetermined threshold or increase, the distance d between separating element 14 and knock-out drum 4 may be too large.Distance d can change until ratio is best for reclaiming most of metallic particles from useless grain flow.In the 3rd example shown in Fig. 5 and 6, photoemission pickoff part 212 can construct similarly with the photoemission pickoff part 12 of the first example.But optical receiving sensor part 213 can be orientated as apart from photoemission pickoff part 212 1 distance, wherein Sensor section 212,213 is all with the Distance positioning similar apart from separating element 14.Thus, the light beam 217 of transmitting was advanced along the path almost parallel with the surface of separating element before arrival optical receiving sensor part 213.
As shown in Figure 5, sensor device 211 is surrounded by lid 219 at least in part.In the example shown, lid 219 comprises panel 219a, b of two sheet shapes, and such as metal or other applicable materials, they open when seeing along the transmission direction Rt of particle.These panels 219a, b protect sensor device 211 can not be dirty and/or impaired and thus reduce the risk of sensor device fault.Preferably, cover 219 there is easy cleaning and the shape and size of separation process can be interrupted in ground.
Although exemplary embodiment of the present invention describes above, partly with reference to accompanying drawing, it will be appreciated that and the invention is not restricted to these embodiments.Those skilled in the art, when putting into practice the invention stated, from the research to accompanying drawing, description and claims, can understand and realize the change for disclosed embodiment.Clearly, such as, eddy current separation equipment can comprise according to sensor device of the present invention, and it is only operatively bonded to feedway and is configured to produce signal to control the speed of feedway.In such examples, separating element is without the need to unnecessarily reorientating.And clearly, emission sensor parts and receiving sensor parts can for variety classeses and be the parts from those the different structures described by the different examples of eddy current separation equipment 1 according to the present invention.Electric coil can use together with the first and second sensor elements of any kind, the cooperation of these parts have to count the total number of particle by described sensor element.And also can use the 3rd sensor element of other kinds, it can count the quantity of the conductive particle by described 3rd sensor element.3rd sensor element also can construct the kind of the metallic particles determined by described sensor element.
And, separating element 14 can for different designs and comprise means of different can displaceability with what provide separating element 14 relative to knock-out drum 4.
Two or more particulate fraction can be separated by means of eddy current separation equipment according to the present invention.The quantity of the separating element that so will use can corresponding to the quantity of particulate fraction to be separated.Based on the kind of particle to be separated, knock-out drum can comprise permanent magnet or electromagnet.
" embodiment " or " embodiment " in this description is meant to, and the concrete feature, structure or the feature that describe explicitly with this embodiment are included at least one embodiment of the present invention.Thus, the phrase " in one embodiment " of this description difference or the appearance of " in an embodiment " are not all refer to same embodiment.And, be noted that the concrete feature of one or more embodiment, structure or feature can combine to be formed the new but embodiment clearly do not described in any applicable mode.
Claims (23)
1. one kind for the eddy current separation equipment from grain flow separating particles, wherein said separation equipment comprises: knock-out drum (4), and it is suitable at least forming the first particulate fraction (21) from described drum along the first track (6) movement and from described drum along second particulate fraction (23) of the second track (8) movement from grain flow, be positioned at the feedway (2) of described knock-out drum upstream, for particle is supplied to described knock-out drum, and be arranged at the separating element (14) in described knock-out drum downstream, for the first particulate fraction and the second particulate fraction are separated, wherein, described separation equipment also comprises sensor device (11, 111, 211), described sensor device arrange be used for from one of described particulate fraction at least partly detection particle, to less granular quantity and/or material behavior, wherein said separating element be mounted to movably described equipment with make the distance (d) between separating element and knock-out drum and/or separating element relative to the orientation of knock-out drum (4) and/or the transmission speed of feedway (2) based on the quantity of detection particle and/or material behavior adjustable according to the signal from sensor device, it is characterized in that, described sensor device comprises the transmitter part (12 being suitable for sending pencil energy, 112, 212), and when particle is through the receiver part (13 measuring reflection and/or decay during energy beam, 113, 213), wherein said sensor device comprises the 3rd sensor element (218), it is configured to detect the electromagnetic response by the particle of described 3rd sensor element, wherein said sensor device comprises detection segment, described detection segment is configured to allow the sample by the first particulate fraction, wherein said sensor device is configured to the metal grades calculating the first particulate fraction based on the given average grain mass ratio between sensor counting and nonmetal and metallic particles, wherein said equipment is configured to the position regulating separating element based on the signal from sensor device roughly continuously.
2. eddy current separation equipment according to claim 1, wherein said equipment is configured to every position regulating separating element a few second.
3. eddy current separation equipment according to claim 1 and 2, wherein said transmitter part is optical transmitter, and described receiver part is optical receiver.
4. eddy current separation equipment according to claim 1 and 2, wherein said 3rd sensor element is electric coil.
5. eddy current separation equipment according to claim 1 and 2, wherein said sensor device arrangement deviates from the side place of described knock-out drum in described separating element.
6. eddy current separation equipment according to claim 1 and 2, wherein each particulate fraction comprises the one in ferrous metal particulate fraction, nonferrous metal particulate fraction (21) and non-metallic particle part (23).
7. eddy current separation equipment according to claim 1 and 2, wherein said knock-out drum (4) comprises permanent magnet or is configured to the electromagnet that switches on or off during separation process.
8. eddy current separation equipment according to claim 1 and 2, wherein said separation equipment comprises the control unit (16) being operatively connected to described sensor device, described particle feed apparatus and/or described separating element, wherein said control unit be configured to control feedway speed, separating element relative in the displacement of knock-out drum and/or orientation at least one of them.
9. according to the eddy current separation equipment of claim 1 or 2, wherein said control unit comprises memory, to store the predetermined relationship between quantity and separating element position and/or feedway speed at least detecting particle.
10. eddy current separation equipment according to claim 8, wherein said equipment also comprises for determining the device of described feedway to the pellet supply speed of knock-out drum, and wherein said control unit is operatively bonded to described device.
11. eddy current separation equipments according to claim 1 and 2, wherein said separation equipment comprises framework, and described framework receives described separating element slidably.
12. eddy current separation equipments according to claim 11, wherein said framework receives described separating element slidably by means of the guide be arranged on described framework (15).
13. eddy current separation equipments according to claim 1 and 2, wherein said separation equipment comprises the framework rotatably receiving described separating element.
14. eddy current separation equipments according to claim 13, wherein said separation equipment also comprises motor, is bonded to described separating element to described motor operated property and rotates by the rotation of described motor to make described separating element.
15. eddy current separation equipments according to claim 1 and 2, the transceiver portion of wherein said sensor device is divided and is arranged so that the energy in use sent is advanced towards partition surface on the direction substantially vertical with partition surface.
16. eddy current separation equipments according to claim 1 and 2, the transmitter of wherein said sensor device is arranged so that the energy in use sent is advanced with being roughly parallel to partition surface.
17. eddy current separation equipments according to claim 15, the receiver portion of wherein said sensor device is divided and is set to apart from partition surface distance.
18. eddy current separation equipments according to claim 15, the receiver portion of wherein said sensor device is divided and is arranged so that the energy in use sent receives from the direction almost parallel with partition surface.
19. eddy current separation equipments according to claim 1 and 2, wherein said sensor device is surrounded by lid (219) at least in part.
20. eddy current separation equipments according to claim 19, wherein, described lid comprises at least one chip component (219a, b).
21. eddy current separation equipments according to claim 1 and 2, the upstream and downstream of wherein said separating element is provided with corresponding receiving area.
22. eddy current separation equipments according to claim 21, wherein said receiving area is container.
23. for the method from grain flow separating particles, and it uses according to the eddy current separation equipment of claim 1-22 described in any one, and wherein said method comprises:
-grain flow is supplied to knock-out drum;
-detect the quantity of at least part of particle of one of the particulate fraction from drum;
-count described amounts of particles;
-determine the quantity of at least part of metallic particles of described particulate fraction;
-based on grain count and metallic particles counting displacement separating element to regulate separating element relative to the distance (d) of excircle of drum and/or orientation and/or the transmission speed based on counted amounts of particles adjustment feedway.
Applications Claiming Priority (3)
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|---|---|---|---|
| NL2006306 | 2011-02-28 | ||
| NL2006306A NL2006306C2 (en) | 2011-02-28 | 2011-02-28 | Eddy current seperation apparatus, separation module, separation method and method for adjusting an eddy current separation apparatus. |
| PCT/NL2012/050118 WO2012118373A1 (en) | 2011-02-28 | 2012-02-28 | Eddy current separation apparatus, separation module, separation method and method for adjusting an eddy current separation apparatus |
Publications (2)
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| CN103459040A CN103459040A (en) | 2013-12-18 |
| CN103459040B true CN103459040B (en) | 2016-01-20 |
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Country Status (10)
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| US (1) | US9221061B2 (en) |
| EP (1) | EP2680974A1 (en) |
| JP (1) | JP5824684B2 (en) |
| KR (1) | KR20140034766A (en) |
| CN (1) | CN103459040B (en) |
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| NL (1) | NL2006306C2 (en) |
| RU (1) | RU2576415C2 (en) |
| SG (1) | SG192971A1 (en) |
| WO (1) | WO2012118373A1 (en) |
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Also Published As
| Publication number | Publication date |
|---|---|
| RU2013140304A (en) | 2015-04-10 |
| CN103459040A (en) | 2013-12-18 |
| NL2006306C2 (en) | 2012-08-29 |
| SG192971A1 (en) | 2013-09-30 |
| WO2012118373A1 (en) | 2012-09-07 |
| RU2576415C2 (en) | 2016-03-10 |
| CA2828482A1 (en) | 2012-09-07 |
| JP5824684B2 (en) | 2015-11-25 |
| US20150108047A1 (en) | 2015-04-23 |
| EP2680974A1 (en) | 2014-01-08 |
| US9221061B2 (en) | 2015-12-29 |
| JP2014511271A (en) | 2014-05-15 |
| KR20140034766A (en) | 2014-03-20 |
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